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KALAMAZOO (WWJ) – If you thought you felt an
earthquake on Saturday — you did. And It was one of the strongest quakes
ever experienced in Michigan.Paul Caruso, a geophysicist with the United States Geological Survey,
said an earthquake with a magnitude of 4.2 and a depth of focus of 5.9
km was measured around 12:23 p.m. about nine miles southeast of
Kalamazoo, near Galesburg.Dozens of residents in several different regions beyond Kalamazoo —
from Mount Pleasant and Sterling Heights to Lansing and even as far as
Cleveland, Ohio — called the WWJ Newsroom and reported feeling a rumble
and the ground shake for between five and 10 seconds.“Earthquakes of this magnitude are very rare in Michigan,” Caruso
told WWJ’s Russ McNamara.

“We’ve had reports from Wisconsin, Illinois,
Indiana and Ohio of people feeling this earthquake.”So, what exactly happened? “All earthquakes occur on faults, and we
do have some faults in southern Michigan,” said Caruso. When the
underground breaks along a fault, a sudden release of energy causes a
seismic wave, which makes the ground shake.Despite being felt hundreds of miles away, no damage or injuries have been reported.The strongest earthquake in Michigan history was a 4.6 magnitude in nearly the exact same location in August 1947.Stay with WWJ Newsradio 950 and CBSDetroit.com for the latest.